#!/bin/sh
# This file is part of the coreboot project.
#
# Copyright (C) 2018 Google Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
#
# DESCR: Run clang-format on white-listed directories

LC_ALL=C export LC_ALL

# until we require this by default, we need a list of opted-in directories
if [ ! -f .clang-format-scope ]; then
	exit 0
fi

files_to_check=$(git log HEAD~..HEAD --format= --name-only $(cat .clang-format-scope) |grep "\.[ch]$")

# nothing to do
if [ -z "$files_to_check" ]; then
	exit 0
fi

if [ $(clang-format $files_to_check | wc -l) -gt 0 ]; then
	if [ "$(git diff --no-prefix HEAD~..HEAD -- $files_to_check | clang-format-diff)" != "" ]; then
		echo "Coding style mismatch. The following patch fixes it:"
		git diff --no-prefix HEAD~..HEAD -- $files_to_check | clang-format-diff
		exit 0
	fi
fi
